From 1690aff45e4515b10b21075428ddee58a6e3b40e Mon Sep 17 00:00:00 2001
From: Philipp Crocoll <philipp@crocoll.net>
Date: Sat, 2 Jan 2016 22:22:55 +0100
Subject: [PATCH] prompt to re-enabled fp unlock after change master password

---
 .../Resources/values/strings.xml              |  1 +
 src/keepass2android/SetPasswordDialog.cs      | 26 ++++++++++++-------
 2 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/src/keepass2android/Resources/values/strings.xml b/src/keepass2android/Resources/values/strings.xml
index b04b3367..b6ab7735 100644
--- a/src/keepass2android/Resources/values/strings.xml
+++ b/src/keepass2android/Resources/values/strings.xml
@@ -94,6 +94,7 @@
   <string name="fingerprint_unlock_hint">Touch sensor to unlock database</string>
   <string name="fingerprint_unlock_failed">Fingerprint Unlock failed. Decryption key was invalidated by Android OS. This usually happens if a new fingerprint was enrolled or security settings were changed. Please unlock with your password and then re-enabled Fingerprint Unlock in the database settings.</string>
   <string name="fingerprint_disabled_wrong_masterkey">Unlocking the database failed: Invalid composite key. Fingerprint Unlock was disabled because apparently the stored master password is no longer valid. Please unlock with your password and then re-enabled Fingerprint Unlock in the database settings.</string>
+  <string name="fingerprint_reenable">Please re-enable Fingerprint Unlock for the new master password.</string>
 
   <string name="enable_fingerprint_unlock_Info">
     This will store your master password on this device,
diff --git a/src/keepass2android/SetPasswordDialog.cs b/src/keepass2android/SetPasswordDialog.cs
index edcd2699..5ebaba3d 100644
--- a/src/keepass2android/SetPasswordDialog.cs
+++ b/src/keepass2android/SetPasswordDialog.cs
@@ -17,6 +17,7 @@ This file is part of Keepass2Android, Copyright 2013 Philipp Crocoll. This file
 using System;
 using Android.Content;
 using Android.OS;
+using Android.Preferences;
 using Android.Widget;
 
 namespace keepass2android
@@ -26,16 +27,11 @@ namespace keepass2android
 	{
 		
 		internal String Keyfile;
-		private readonly FileOnFinish _finish;
 		
 		public SetPasswordDialog(Context context):base(context) {
 		}
 		
-		public SetPasswordDialog(Context context, FileOnFinish finish):base(context) {
-			
-			_finish = finish;
-		}
-
+		
 		
 		protected override void OnCreate(Bundle savedInstanceState) 
 		{
@@ -71,7 +67,7 @@ namespace keepass2android
 					
 				}
 				
-				SetPassword sp = new SetPassword(Context, App.Kp2a, pass, keyfile, new AfterSave(this, _finish, new Handler()));
+				SetPassword sp = new SetPassword(Context, App.Kp2a, pass, keyfile, new AfterSave(this, null, new Handler()));
 				ProgressTask pt = new ProgressTask(App.Kp2a, Context, sp);
 				pt.Run();
 			};
@@ -82,9 +78,6 @@ namespace keepass2android
 			Button cancelButton = (Button) FindViewById(Resource.Id.cancel);
 			cancelButton.Click += (sender,e) => {
 				Cancel();
-				if ( _finish != null ) {
-					_finish.Run();
-				}
 			}; 
 		}
 
@@ -106,6 +99,19 @@ namespace keepass2android
 					if ( _finish != null ) {
 						_finish.Filename = _dlg.Keyfile;
 					}
+					FingerprintUnlockMode um;
+					Enum.TryParse(PreferenceManager.GetDefaultSharedPreferences(_dlg.Context).GetString(App.Kp2a.GetDb().CurrentFingerprintModePrefKey, ""), out um);
+
+					if (um == FingerprintUnlockMode.FullUnlock)
+					{
+						ISharedPreferencesEditor edit = PreferenceManager.GetDefaultSharedPreferences(_dlg.Context).Edit();
+						edit.PutString(App.Kp2a.GetDb().CurrentFingerprintPrefKey, "");
+						edit.PutString(App.Kp2a.GetDb().CurrentFingerprintModePrefKey, FingerprintUnlockMode.Disabled.ToString());
+						edit.Commit();
+
+						Toast.MakeText(_dlg.Context, Resource.String.fingerprint_reenable, ToastLength.Long).Show();
+						_dlg.Context.StartActivity(typeof(FingerprintSetupActivity));
+					}
 
 					_dlg.Dismiss();
 				} else {